Dahlia plant named ‘DATYVE’

ABSTRACT

A new distinct cultivar of  Dahlia  plant named ‘DATYVE’, characterized by its upright to slightly spreading shape, with stiff and strong lateral stems and thick compound leaves, with up to 12 leaflets. The color of the mature leaves are RHS Green 139A (upper side) and RHS Grayed-green 191A (Underside). Compound leaves are 6-24 cm in length, and 8-18 cm in width. Hardly no single leaves are present. Composite flower heads are 9-10 cm in diameter, with a large number of ray florets (about 120 to 150). The ray florets are RHS Orange-red N30B and RHS Yellow 2A near base.

Latin name of the genus and species of the claimed plant: Dahlia Cav.

Variety denomination: ‘DATYVE’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Dahlia plant, botanically known as Dahlia Cav., of the Compositae (Asteraceae) family, hereinafter referred to by the cultivar name ‘DATYVE’.

The new Dahlia cultivar is a product of a planned breeding program conducted by the inventor, Rune Nielsen, in Stige, Denmark. The objective of the breeding program is to develop a new Dahlia cultivar with an upright, strong and healthy growth habit, suitable for large scale container production and with good garden performance; fully double flowers creating globular-shaped flower head (composite flower heads with many ray florets) with an attractive inflorescence color.

The new Dahlia cultivar originated from a cross, made in a controlled breeding program by the inventor in 2008, in Stige, Denmark. The female or seed parent is Yellow-orange Dahlia cultivar designated ‘DASYTTEN’ (Patented, U.S. Plant Pat. No. 21,037). The male or pollen parent is unknown.

Asexual reproduction of the new Dahlia cultivar by terminal cuttings was first performed in September, 2009 in Stige, Denmark, and has demonstrated that the combination of characteristics as herein disclosed for the new cultivar are firmly fixed and retained through successive generations of asexual reproduction. The new cultivar reproduces true to type.

BRIEF SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined to be unique characteristics of ‘DATYVE’, which in combination distinguish this Dahlia as a new and distinct cultivar:

-   -   1. Cultivar with upright to slightly spreading shape;     -   2. Cultivar with stiff and strong lateral stems and thick         compound leaves, with up to 12 leaflets. Color of mature leaves         RHS 139A (upper side) RHS 191A (Underside);     -   3. Compound leaves with 3 to 12 leaflets, 6-24 cm in length, and         8-18 cm in width and hardly any single leaves present.     -   4. Composite flower heads, with a large number of ray florets         (about 120 to 150); and     -   5. Ray florets which are RHS Orange-red N30B and RHS Yellow 2A         near base.

Plants of the new Dahlia ‘DATYVE’ differ from plants of the parent, ‘DASYTTEN’ (Patented, U.S. Plant Pat. No. 21,037) in the traits described in Table 1. (The male parent is unknown).

TABLE 1 Comparison with Parent Variety New Cultivar Comparison Cultivar Trait ‘DATYVE’ ‘DASYTTEN’ Plant Size Height: About 30-45 cm. About 45-50 cm. Diameter: About 40-50 cm. About 35-40 cm. Overall Plant Shape: Upright to spreading with Cylindrical, upright to basal branching. outward, with basal Inflorescences in branching. Inflorescences composite heads. in composite heads. Basal branches with flowers Length: 25-35 cm. 25-40 cm. Diameter: 12-14 mm 6-11 mm Strength: Stiff and strong. Stiff and strong. Color: RHS Brown 200B at the RHS Brown 200A on oldest parts. RHS older stems, and RHS Yellow-green 146B on Yellow-green 147B, on most parts. Younger stems or stems exposed to less light. Leaves Colour mature RHS Green 139A. RHS Grayed-green upper side: N 189A. Underside: RHS Grayed-green 191A. RHS Grayed-green 191B. Peduncle Colour mature: RHS Brown 200B RHS Brown 200B Colour immature: RHS Yellow-green 146B RHS 146B Color of ray florets RHS Orange-red N30B Near base RHS 1B, Upper side: and RHS Yellow 2A near transitioning to RHS 17C base. at apex.

Of the many commercial cultivars known to the present inventor, the most similar in comparison to the new Dahlia ‘DATYVE’ is the Dahlia cultivar ‘DASYTTEN’, in the characteristics described in Table 2: Table 2—Comparison with Comparison Variety

TABLE 2 Comparison with Comparison Variety New Cultivar Comparison Cultivar Trait ‘DATYVE’ ‘DASYTTEN’ Plant Size Height: About 30-45 cm. About 45-50 cm. Diameter: About 40-50 cm. About 35-40 cm. Overall Plant Shape: Upright to spreading Cylindrical, upright to with basal branching. outward, with basal Inflorescences in branching. Inflorescences composite heads. in composite heads. Basal branches with flowers Length: 25-35 cm. 25-40 cm. Diameter: 12-14 mm 6-11 mm Strength: Stiff and strong. Stiff and strong. Color: RHS Brown 200B at the RHS Brown 200A on older oldest parts. RHS stems, and RHS Yellow- Yellow-green 146B on green 147B, on Younger most parts. stems or stems exposed to less light. Leaves Colour mature RHS Green 139A. RHS Grayed-green upper side: N189A. Underside: RHS Grayed-green RHS Grayed-green 191B. 191A. Peduncle Colour mature: RHS Brown 200B RHS Brown 200B Colour immature: RHS Yellow-green RHS 146B 146B Color of ray florets RHS Orange-red N30B Near base RHS 1B, Upper side: and RHS Yellow 2A transitioning to RHS 17C near base. at apex.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Dahlia ‘DATYVE’ showing the colors as true as is reasonably possible with colored reproductions of this type. Colors in the photographs may differ slightly from the color value cited in the detailed botanical description, which accurately describe the color of ‘DATYVE’.

FIG. 1 shows a close-up view of the composite flower head from ‘DATYVE’.

FIG. 2 shows a side view perspective of a typical flowering plant of ‘DATYVE’ in a 19 cm pot, at 8 weeks of age after potting the young plant.

FIG. 3 shows a close-up view of different development stages of the composite flower head of ‘DATYVE’.

FIG. 4 shows a close-up view of the 120-150 ray florets from one composite flower head of ‘DATYVE’

FIG. 5 shows a close-up view of the different compound leaf sizes of ‘DATYVE’.

FIG. 6 shows a comparison between ‘DASYTTEN’ and ‘DATYVE’ (Breeders reference: 6712A).

DETAILED BOTANICAL DESCRIPTION

The new Dahlia ‘DATYVE’ has not been observed under all possible environmental conditions. The phenotype of the new cultivar may vary with variations in environment such as temperature, light intensity, and day length without any change in the genotype of the plant.

The aforementioned photographs, together with the following observations, measurements and values describe the new Dahlia ‘DATYVE’ as grown in a protected environment in a glass, greenhouse in Fyn, Odense, Denmark, under conditions which closely approximate those generally used in commercial practice. During propagation, conducted in a glasshouse, vegetative cuttings were planted 6 Jul. 2011 in small propagation pots with peat as substrate, and then placed in a plastic tunnel averaging about 21° C. and received photoperiodic treatments of 18 hours. Supplementary light was given when natural light fell below 3000-4000 Lux. Rooting occurred about 12 days after planting. In third week after planting the cutting (27 Jul. 2011), young plants were potted in an 19 cm pot in a glass covered greenhouse, maintained at 18° C. to 26° C. during the day, and at 17° C. to 19° C. during the night. Plants were grown under natural daylight conditions. Irrigation was done with water. The EC measured in the soil was maintained between 2.0 to 3.0. One week after potting, the first growth regulation was given: a spray with 85% daminozide, 0.2%, 40-100 ml/m2. During the production time, 9 additional sprayings were given with 85% daminozide, 0.2%, 40-100 ml/m2.

Color references are made to The Royal Horticultural Society Colour Chart (R.H.S.), 2001 edition, except where general colors of ordinary significance are used. Color values were taken under September daylight conditions at approximately 12:00 PM and 2:00 PM in Fyn, Odense, Denmark. The age of the ‘DATYVE’ plants described is 10-11 weeks (including propagation time).

-   Classification:     -   -   Botanical.—Dahlia Cav. -   Parentage:     -   -   Female or seed parent.—Dahlia variety designated DASYTTEN             (Patented, U.S. Plant Pat. No. 21,037).         -   Male or pollen parent.—Unknown. -   Propagation:     -   -   Type.—Vegetative terminate cuttings.         -   Time and temperature to initiate roots.—About 9 to 12 days             at 21° C. in tunnels or flat covered in a greenhouse.         -   Time and temperature to produce a rooted young plant.—About             21 days at 21° C. during rooting phase, followed by 18° C.         -   Rooting habit.—Fine, fibrous; Color of root: RHS             Yellow-white 158C.         -   Tuber development.—Plants might develop tubers in late fall             when planted outside. -   Plant description:     -   -   General appearance and form.—Upright to slightly spreading             shape. Inflorescences in composite heads.         -   Growth rate.—Growing about 3 to 6 cm per week during             production period.         -   Plant height (from soil level to top of plant plane).—About             30-45 cm.         -   Plant width (spread).—About 40-45 cm.         -   Crop time to produce a mature flowering plant.—It requires 3             to 4 weeks to produce a young plant in a 35 mm propagation             plug. After potting 7 to 11 weeks are required to produce             finished flowering plants in 19 cm pots. -   Stem:     -   -   Shape.—Round.         -   Length (pinched above 3 pair of leaves).—About 5-6 cm.         -   Diameter.—About 12-16 mm.         -   Strength.—Stiff and strong.         -   Aspect.—Upright.         -   Texture.—Fluted woody surface.         -   Color.—RHS Brown 200B, with stripes of RHS Gray-brown 199C. -   Branches:     -   -   Branching habit.—Basal branching with lateral branches.         -   Number of basal branches per plant.—About 3-5 (when pinched             above 3 pair of leaves).         -   Length (including flowers).—About 25-35 cm.         -   Diameter.—About 12-14 mm.         -   Strength.—Stiff and strong.         -   Aspect.—Upright to slightly spreading.         -   Texture.—Glabrous and slightly furrowed, Mammillate near the             base.         -   Color.—Mature: RHS Brown 200B at the oldest parts. RHS             Yellow-green 146B on most parts.         -   Internodes length.—About 15-50 mm.         -   Internodes color.—RHS Yellow-green 146B. -   Foliage description:     -   -   Type.—Compound leaves divided into 3-12 leaves.         -   Number of leaves per branch.—About 8-12 per branch.         -   Color of leaves (leaves and leaflets).—Color of upper side             (mature) RHS 139A. Color of underside (mature) RHS 191A.             Color of upper side (immature) RHS 137A. Color of underside             (immature) RHS 137C.         -   Venation (leaves and leaflets).—Pattern: Pinnate. Color of             upper side: RHS 146A. Color of underside: RHS 146C. -   Compound leaves:     -   -   Number of leaflets per compound leaf.—3-12.         -   Length of compound leaf.—6-24 cm.         -   Width of compound leaf.—8-18 cm.         -   Petiole of compound leaves.—Shape: Semi circular, with deep             furrow on adaxial side. Length: 3-6 cm. Diameter: 3-10 mm.             Texture: Smooth and glabrous. Color: RHS Yellow-green 146B             to RHS Brown 200B on sun exposed areas.         -   Leaflets of compound leaf.—Terminal leaflet quantity: 1.             Terminal leaflet length: 5-10 cm. Terminal leaflet width:             4-9 cm. Terminal leaflet shape: Ovate. Terminal leaflet             shape at apex: Acuminate. Terminal leaflet shape at base:             Cordate to rounded (not always symmetric). Terminal leaflet             margin: Dentate. Terminal leaflet texture (both sides):             Rugose. Rachis length: 1-4 cm. Rachis diameter: 2-4 mm.             Rachis color: RHS Yellow-green 146B. Lateral leaflet             quantity: 2-4. Lateral leaflet length: 3-8 cm. Lateral             leaflet width: 3-6 cm. Lateral leaflet overall shape: Ovate.             Lateral leaflet shape at apex: Acuminate (mostly             asymmetric). Lateral leaflet shape at base: Rounded (not             always symmetric). Lateral leaflet margin: Dentate. Lateral             leaflet texture (both sides): Rugose. -   Simple leaves: Hardly ever present. -   Inflorescence description:     -   -   Natural flowering season.—Grown outside as a bedding plant,             flowering occurs continuously during growing season from             spring to autumn/(In Denmark, from June to beginning of             October). Plants can be brought to flower anytime when grown             under the recommended greenhouse conditions.         -   Time to flower.—50 to 80 days from potting a young plant             until flowering.         -   Inflorescence longevity on the plant.—Inflorescence will             maintain good color and substance for about 6-10 days;             however, the longevity of individual inflorescence is highly             dependent on temperature and light conditions. Inflorescence             persistent.         -   Type.—Composite flower heads.         -   Arrangement and shape.—Persistent, single, composite             inflorescences from leaf axils. Disc and ray florets             arranged acropetally in a composite flower head. Upright,             slightly spreading. Terminal young flower head/buds             initially 0-30°. Buds from axillary shoots 90-120°. When             flower opens 30-90°.         -   Quantity of inflorescences heads.—Freely flowering; about 14             buds and open inflorescences per plant.         -   Fragrance.—None.         -   Bud (Inflorescences head).—Rate of opening (from showing             color to fully open): 4 to 10 days. The rate of opening is             highly dependent on temperature and light conditions.             Length: About 10-14 mm. Diameter: About 18-22 mm. Shape:             Flat globular. Texture: Glabrous, shining. Color: RHS             Yellow-green 144C.         -   Peduncle.—From both terminate and axillary shoots. Length:             About 8-14 cm. Diameter: About 4-6 mm. Angle: About 0-20°             from vertical. Strength: Stiff and strong. Texture:             Glabrous. Color (mature/immature, directly sun exposed): RHS             Brown 200B. Color (mature/immature not directly sun             exposed): RHS Yellow-green 146B. sun exposed):         -   Inflorescence head.—Depth (height): 3-5 cm. Diameter: 9-10             cm.         -   Ray florets.—Arrangement: Imbricate, in about 9 to 12 whorls             of ray florets, each with 9 to 11 florets to equal a total             of about 120-150 ray florets per flower head, depending on             light and temperature conditions. Quantity per Inflorescence             head: 120-150. Length: 45-50 mm. Widths: 20-25 mm. Overall             shape: Obovate. Apex shape: Obtuse. Base shape: Acuminate,             slightly fused. Margin: Entire. Texture: Glabrous (upper             side and underside). Colour when opening fused ray floret             starting to show color: RHS Orange N34B. Colour when fully             opened Color upper side: RHS Orange-red N30B and RHS Yellow             2A near base. Color underside: RHS RHS Orange-red 34B.             Nerves and the area near base are RHS Yellow 2A.         -   Disc florets.—Arrangement: 30-40 yellow-orange disc florets             arranged in center of inflorescence head. Apperance:             Quantity per Inflorescence head: 30-40. Length: 8-12 mm.             Diameter: 2 mm. Overall shape: Tubular. Apex shape: Star             with 5 triangular tips. Base shape: Fused to tube. Color RHS             Yellow-orange 21A.         -   Phyllary.—Arrangement: One subtending each floret. Quantity:             160-200. Length: 12-22 mm. Width: 6-9 mm. Overall shape:             Rounded. Shape at apex: Acute with rounded tip. Shape at             base: Fused. Margin: Entire. Color: Mature: RHS Yellow-green             151C. RHS Yellow-green 146A on underside of the 8-10             phyllaries in the outer whorl, Immature: RHS Yellow-green             151C.         -   Bracts.—Arrangement and appearance: Reflexed, involucral             bracts. Quantity: 7-8. Length: 12-18 mm. Width: 6-8 mm.             Overall shape: Subulate. Apex shape: Acute. Base shape:             Sessile. Margin: Entire. Texture: Glabrous. Colour mature             Upper side: RHS 137A. Underside: RHS 137B. Colour immature             Upper side: RHS 137A. Underside: RHS 137B. -   Reproductive organs:     -   -   Androecium.—Location: Disc florets only. Stamen number: 5,             fused into synandrous tube around style. Stamen length:             About 6-8 mm. Anther shape: Tubular. Anther length: About             4-5 mm. Pollen amount: Some. Pollen color: RHS N25C.         -   Gynoecium.—Location: Ray and disc florets. Quantity: 1.             Pistil length: 12-14 mm. Stigma shape: Bifurcate. Stigma             length: About 4 mm. Stigma color: Not visible due to the             cover of pollen brushed of the anthers. It then appears RHS             N25C. Style length: About 6 mm. Style color: RHS 151C. Ovary             color: RHS 151C. -   Seed/fruit: Seed and fruit production has not been observed. -   Disease/pest resistance: Resistance to pathogens and pests common to     Dahlia has not been observed. -   Disease/pest susceptibility: Susceptibility to pathogens and pests     common to Dahlia has not been observed. -   Temperature tolerance: Plants of the new Dahlia have exhibited good     tolerance rain, wind and drought; however, flowering may cease     during hot periods (temperatures above 25° C.). Low temperature     tolerance to 1° C. -   Growth regulators: Daminozide (85% water soluble dryconcentrate     formulation). 

What is claimed is:
 1. A new and distinct cultivar of Dahlia plant named ‘DATYVE’, as illustrated and described herein. 